Enum juniper::TypeKind

pub enum TypeKind {
    Scalar,
    Object,
    Interface,
    Union,
    Enum,
    InputObject,
    List,
    NonNull,
}

GraphQL type kind

The GraphQL specification defines a number of type kinds - the meta type
of a type.

Variants

Scalar

Scalar types

Scalar types appear as the leaf nodes of GraphQL queries. Strings,
numbers, and booleans are the built in types, and while it’s possible
to define your own, it’s relatively uncommon.

Object

Object types

The most common type to be implemented by users. Objects have fields
and can implement interfaces.

Interface

Interface types

Interface types are used to represent overlapping fields between
multiple types, and can be queried for their concrete type.

Union

Union types

Unions are similar to interfaces but can not contain any fields on
their own.

Enum

Enum types

Like scalars, enum types appear as the leaf nodes of GraphQL queries.

InputObject

Input objects

Represents complex values provided in queries into the system.

List

List types

Represent lists of other types. This library provides implementations
for vectors and slices, but other Rust types can be extended to serve
as GraphQL lists.

NonNull

Non-null types

In GraphQL, nullable types are the default. By putting a ! after a
type, it becomes non-nullable.

Trait Implementations

impl Clone for TypeKind

fn clone(&self) -> TypeKind

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for TypeKind

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<__S> FromInputValue<__S> for TypeKind

where __S: ScalarValue,

type Error = String

Type of this conversion error.

fn from_input_value(v: &InputValue<__S>) -> Result<Self, Self::Error>

Performs the conversion.

fn from_implicit_null() -> Result<Self, Self::Error>

Performs the conversion from an absent value (e.g. to distinguish between implicit and explicit null).

impl<__S> GraphQLType<__S> for TypeKind

where __S: ScalarValue,

fn name(_: &Self::TypeInfo) -> Option<&'static str>

Returns name of this GraphQLType to expose.

fn meta<'r>( info: &Self::TypeInfo, registry: &mut Registry<'r, __S> ) -> MetaType<'r, __S>

where __S: 'r,

Returns MetaType representing this GraphQLType.

impl<__S> GraphQLValue<__S> for TypeKind

where __S: ScalarValue,

type Context = ()

Context type for this GraphQLValue.

type TypeInfo = ()

Type that may carry additional schema information for this GraphQLValue.

fn type_name<'__i>(&self, info: &'__i Self::TypeInfo) -> Option<&'__i str>

Returns name of the GraphQLType exposed by this GraphQLValue.

fn resolve( &self, _: &(), _: Option<&[Selection<'_, __S>]>, _: &Executor<'_, '_, Self::Context, __S> ) -> ExecutionResult<__S>

Resolves the provided selection_set against this GraphQLValue.

fn resolve_field( &self, _info: &Self::TypeInfo, _field_name: &str, _arguments: &Arguments<'_, S>, _executor: &Executor<'_, '_, Self::Context, S> ) -> ExecutionResult<S>

Resolves the value of a single field on this GraphQLValue.

fn resolve_into_type( &self, info: &Self::TypeInfo, type_name: &str, selection_set: Option<&[Selection<'_, S>]>, executor: &Executor<'_, '_, Self::Context, S> ) -> ExecutionResult<S>

Resolves this GraphQLValue (being an interface or an union) into a concrete downstream object type.

fn concrete_type_name( &self, context: &Self::Context, info: &Self::TypeInfo ) -> String

Returns the concrete GraphQLType name for this GraphQLValue being an interface, an union or an object.

impl<__S> GraphQLValueAsync<__S> for TypeKind

where __S: ScalarValue + Send + Sync, Self: Sync,

fn resolve_async<'__a>( &'__a self, info: &'__a Self::TypeInfo, selection_set: Option<&'__a [Selection<'_, __S>]>, executor: &'__a Executor<'_, '_, Self::Context, __S> ) -> BoxFuture<'__a, ExecutionResult<__S>>

Resolves the provided selection_set against this GraphQLValueAsync.

fn resolve_field_async<'a>( &'a self, _info: &'a Self::TypeInfo, _field_name: &'a str, _arguments: &'a Arguments<'_, S>, _executor: &'a Executor<'_, '_, Self::Context, S> ) -> BoxFuture<'a, ExecutionResult<S>>

Resolves the value of a single field on this GraphQLValueAsync.

fn resolve_into_type_async<'a>( &'a self, info: &'a Self::TypeInfo, type_name: &str, selection_set: Option<&'a [Selection<'a, S>]>, executor: &'a Executor<'a, 'a, Self::Context, S> ) -> BoxFuture<'a, ExecutionResult<S>>

Resolves this GraphQLValueAsync (being an interface or an union) into a concrete downstream object type.

impl<__S> IsInputType<__S> for TypeKind

where __S: ScalarValue,

fn mark()

An arbitrary function without meaning.

impl<__S> IsOutputType<__S> for TypeKind

where __S: ScalarValue,

fn mark()

An arbitrary function without meaning.

impl PartialEq for TypeKind

fn eq(&self, other: &TypeKind) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<__S> ToInputValue<__S> for TypeKind

where __S: ScalarValue,

fn to_input_value(&self) -> InputValue<__S>

Performs the conversion.

impl Eq for TypeKind

impl StructuralPartialEq for TypeKind